Title, specified as a character vector, string scalar, or categorical array. If you specify this property as a categorical array, MATLAB^® displays only the first element in the array.

MATLAB does not interpret a vertical slash ('|') character as a line break, it displays as a vertical slash in the title.

If you want to specify a Unicode^® character, pass the Unicode decimal code to the char function. For example, ['Multiples of ' char(960)] displays as Multiples of π.

Location of the title, specified as 'lefttop', 'centertop', or 'righttop'.

figure-Based Apps

For button groups in apps created with the figure function, you can additionally specify the location of the title as 'leftbottom', 'centerbottom', or 'rightbottom'.

Title color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.

RGB triplets and hexadecimal color codes are useful for specifying custom colors.

Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.

Background color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.

RGB triplets and hexadecimal color codes are useful for specifying custom colors.

Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.

Button group border, specified as 'line' or 'none'. For button groups in apps created with the uifigure function, the default value of BorderType is 'line'.

figure-Based Apps

For button groups in apps created with the figure function, the default value of BorderType is 'etchedin'. You can additionally specify the button group border as 'etchedin', 'etchedout', 'beveledin', or 'beveledout'.

Border width, specified as a positive integer value. The unit of measurement is pixels.

Border color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.

RGB triplets and hexadecimal color codes are useful for specifying custom colors.

Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.

Font name, specified as a system supported font name. The default font depends on the specific operating system and locale.

If the specified font is not available, then MATLAB uses the best match among the fonts available on the system where the app is running.

Example: 'Arial'

figure-Based Apps

For button groups in apps created with the figure function, you can additionally specify the font name as 'FixedWidth'. This uses fixed-width font that looks good in any locale. The actual fixed-width font used depends on the FixedWidthFontName property of the root object. Changing the FixedWidthFontName property causes an immediate update of the display to use the new font.

Font size, specified as a positive number. The FontUnits property specifies the units. The default font size depends on the specific operating system and locale.

Example: 14

Font weight, specified as one of these values:

Not all fonts have a bold font weight. For fonts that do not, specifying 'bold' results in the normal font weight.

Font angle, specified as 'normal' or 'italic'. Not all fonts have an italic font angle. For fonts that do not, specifying 'italic' results in the normal font angle.

Font unit of measurement, specified as one of the values in this table.

figure-Based Apps

For button groups in apps created with the figure function, the default value of FontUnits is 'points'.

State of visibility, specified as 'on' or 'off', or as numeric or logical 1 (true) or 0 (false). A value of 'on' is equivalent to true, and 'off' is equivalent to false. Thus, you can use the value of this property as a logical value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

To make your app start faster, set the Visible property to 'off' for all components that do not need to appear at startup.

Changing the size of an invisible container triggers the SizeChangedFcn callback when it becomes visible.

Changing the Visible property of a container does not change the values of the Visible properties of child components. This is true even though hiding the container causes the child components to be hidden.

Currently selected radio button or toggle button, specified as a RadioButton or a ToggleButton object in uifigure-based apps, or a UIControl object in figure-based apps.

Get the value of this property to determine which button is currently selected within the button group.

Set the value of this property to change the currently selected button. When you change the selection using this property, MATLAB adjusts the Value property for the other buttons within the button group accordingly.

For example, suppose that your button group contains three radio buttons and you set the SelectedObject property to radiobutton3. MATLAB sets the Value property for each child RadioButton as follows:

In other words, setting the SelectedObject property has the same effect as setting the Value property of the buttons in the button group.

Context menu, specified as a ContextMenu object created using the uicontextmenu function. Use this property to display a context menu when you right-click on a component.

Location and size of the button group, including borders and title, specified as a vector of the form [left bottom width height]. This table describes each element in the vector.

All measurements are in units specified by the Units property.

The Position values are relative to the drawable area of the parent container. The drawable area is the area inside the borders of the container and does not include the area occupied by decorations such as a menu bar or title.

This property is read-only.

Location and size of the button group, excluding borders and title, returned as a four-element vector of the form [left bottom width height]. This table describes each element in the vector.

All measurements are in units specified by the Units property.

Location and size of the button group, including borders and title, specified as a four-element vector of the form [left bottom width height]. All measurements are in units specified by the Units property.

This property value is identical to the Position property value.

Units of measurement, specified as one of the values in this table.

The recommended value is 'pixels', because most MATLAB app building functionality measures distances in pixels. You can create an object that rescales based on the size of the parent container by parenting the object to a grid layout manager created using the uigridlayout function. For more information, see Lay Out Apps Programmatically.

Selection changed callback, specified as one of these values:

This callback executes when the user selects a different button within the button group in the app. It does not execute if a radio or toggle button Value property changes programmatically.

This callback function can access specific information about the user’s interaction with the buttons. MATLAB passes this information in a SelectionChangedData object as the second argument to your callback function. In App Designer, the argument is called event. You can query the object properties using dot notation. For example, event.NewValue returns the currently selected button. The SelectionChangedData object is not available to callback functions specified as character vectors.

The following table lists the properties of the SelectionChangedData object.

For more information about writing callbacks, see Callbacks in App Designer.

Size change callback, specified as one of these values:

Define this callback to customize the app layout when the size of this container changes (e.g., when the user resizes the window). In it, write code to adjust the Position property of the child components.

The SizeChangedFcn callback executes when:

Other important points to consider when defining a SizeChangedFcn callback:

In uifigure-based apps, alternate ways to specify resize behavior are to create a GridLayout object or use the auto-reflow options in App Designer. These options can be easier to use than SizeChangedFcn callbacks. However, there are some advantages that SizeChangedFcn callbacks have over these options. For example:

Button-press callback function, specified as one of these values:

For more information about specifying a callback property value as a function handle, cell array, or character vector, see Specify a Callback Function.

The ButtonDownFcn callback is a function that executes when the user clicks a mouse button within the container.

Object creation function, specified as one of these values:

For more information about specifying a callback as a function handle, cell array, or character vector, see Callbacks in App Designer.

This property specifies a callback function to execute when MATLAB creates the object. MATLAB initializes all property values before executing the CreateFcn callback. If you do not specify the CreateFcn property, then MATLAB executes a default creation function.

Setting the CreateFcn property on an existing component has no effect.

If you specify this property as a function handle or cell array, you can access the object that is being created using the first argument of the callback function. Otherwise, use the gcbo function to access the object.

Object deletion function, specified as one of these values:

For more information about specifying a callback as a function handle, cell array, or character vector, see Callbacks in App Designer.

This property specifies a callback function to execute when MATLAB deletes the object. MATLAB executes the DeleteFcn callback before destroying the properties of the object. If you do not specify the DeleteFcn property, then MATLAB executes a default deletion function.

If you specify this property as a function handle or cell array, you can access the object that is being deleted using the first argument of the callback function. Otherwise, use the gcbo function to access the object.

Callback interruption, specified as 'on' or 'off', or as numeric or logical 1 (true) or 0 (false). A value of 'on' is equivalent to true, and 'off' is equivalent to false. Thus, you can use the value of this property as a logical value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

This property determines if a running callback can be interrupted. There are two callback states to consider:

MATLAB determines callback interruption behavior whenever it executes a command that processes the callback queue. These commands include drawnow, figure, uifigure, getframe, waitfor, and pause.

If the running callback does not contain one of these commands, then no interruption occurs. MATLAB first finishes executing the running callback, and later executes the interrupting callback.

If the running callback does contain one of these commands, then the Interruptible property of the object that owns the running callback determines if the interruption occurs:

Callback queuing, specified as 'queue' or 'cancel'. The BusyAction property determines how MATLAB handles the execution of interrupting callbacks. There are two callback states to consider:

The BusyAction property determines callback queuing behavior only when both of these conditions are met:

Under these conditions, the BusyAction property of the object that owns the interrupting callback determines how MATLAB handles the interrupting callback. These are possible values of the BusyAction property:

This property is read-only.

Deletion status, returned as an on/off logical value of type matlab.lang.OnOffSwitchState.

MATLAB sets the BeingDeleted property to 'on' when the DeleteFcn callback begins execution. The BeingDeleted property remains set to 'on' until the component object no longer exists.

Check the value of the BeingDeleted property to verify that the object is not about to be deleted before querying or modifying it.

Ability to become current object, specified as 'on' or 'off', or as numeric or logical 1 (true) or 0 (false). A value of 'on' is equivalent to true, and 'off' is equivalent to false. Thus, you can use the value of this property as a logical value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Parent container, specified as a Figure object created using the uifigure function, or one of its child containers: Tab, Panel, ButtonGroup, or GridLayout. If no container is specified, MATLAB calls the uifigure function to create a new Figure object that serves as the parent container.

ButtonGroup children, returned as an empty GraphicsPlaceholder or a 1-D array of component objects. The children of a ButtonGroup object can be any UI component object, including another ButtonGroup object.

You cannot add or remove child components using the Children property of the ButtonGroup. Use the Children property value to view the list of children or to reorder the children. The order of the children in the property value array reflects the front-to-back order (stacking order) of the components on the screen.

To add a child to this list, set the Parent property of the child component to the ButtonGroup.

Visibility of the object handle, specified as 'on', 'callback', or 'off'.

This property controls the visibility of the object in its parent's list of children. When an object is not visible in its parent's list of children, it is not returned by functions that obtain objects by searching the object hierarchy or querying properties. These functions include get, findobj, clf, and close. Objects are valid even if they are not visible. If you can access an object, you can set and get its properties, and pass it to any function that operates on objects.

This property is read-only.

Type of graphics object, returned as 'uibuttongroup'.

Object identifier, specified as a character vector or string scalar. You can specify a unique Tag value to serve as an identifier for an object. When you need access to the object elsewhere in your code, you can use the findobj function to search for the object based on the Tag value.

User data, specified as any MATLAB array. For example, you can specify a scalar, vector, matrix, cell array, character array, table, or structure. Use this property to store arbitrary data on an object.

If you are working in App Designer, create public or private properties in the app to share data instead of using the UserData property. For more information, see Share Data Within App Designer Apps.

This property is read-only.

Buttons managed by the button group, returned as an array of RadioButton objects or an array of ToggleButton objects.

This property does not necessarily return all the child components of the ButtonGroup object. If you need to access child components that are not RadioButton or ToggleButton objects, use the Children property.

Operational state, specified as 'on' or 'off', or as numeric or logical 1 (true) or 0 (false). A value of 'on' is equivalent to true, and 'off' is equivalent to false. Thus, you can use the value of this property as a logical value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Changing the value of the Enable property for a button group does not change the value of the Enable property for UI components contained within that button group.

Tooltip, specified as a character vector, cell array of character vectors, string array, or 1-D categorical array. Use this property to display a message when the user hovers the pointer over the component at run time. To display multiple lines of text, specify a cell array of character vectors or a string array. Each element in the array becomes a separate line of text. If you specify this property as a categorical array, MATLAB uses the values in the array, not the full set of categories.

Ability to scroll, specified as 'off' or 'on', or as numeric or logical 1 (true) or 0 (false). A value of 'on' is equivalent to true, and 'off' is equivalent to false. Thus, you can use the value of this property as a logical value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Setting this property to 'on' enables scrolling within the container. However, there are additional requirements:

Certain types of charts and axes do not support scrollable containers. However, you can place the chart or axes in a nonscrollable panel, and then place the panel in the scrollable container. For more information, see Display Graphics in App Designer.

Automatically resize children, specified as 'on' or 'off', or as numeric or logical 1 (true) or 0 (false). A value of 'on' is equivalent to true, and 'off' is equivalent to false. Thus, you can use the value of this property as a logical value. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

The AutoResizeChildren property affects direct children of the container, not children inside nested containers.

To customize the resize behavior, set the AutoResizeChildren property to 'off' and create a SizeChangedFcn callback for the container. For more information, see Manage App Resize Behavior Programmatically.

To disable resizing of an app, set the Resize property of the figure to 'off'.

Layout options, specified as a GridLayoutOptions object. This property specifies options for components that are children of grid layout containers. If the component is not a child of a grid layout container (for example, it is a child of a figure or panel), then this property is empty and has no effect. However, if the component is a child of a grid layout container, you can place the component in the desired row and column of the grid by setting the Row and Column properties on the GridLayoutOptions object.

For example, this code places a button group in the third row and second column of its parent grid.

g = uigridlayout([4 3]);
bg = uibuttongroup(g);
bg.Layout.Row = 3;
bg.Layout.Column = 2;

To make the button group span multiple rows or columns, specify the Row or Column property as a two-element vector. For example, this button group spans columns 2 through 3:

bg.Layout.Column = [2 3];

Border shadow color, specified as an RGB triplet, a hexadecimal color code, or one of the color options listed in the table.

RGB triplets and hexadecimal color codes are useful for specifying custom colors.

Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.